T.F. Green Airport Improvement Program - FEIS Chapters - PVD

T.F. Green Airport Improvement ProgramEnvironmental Impact Statement and Final Section 4(f) Evaluationaircraft operations be implemented to achieve allowable noise levels. Noise attenuation measures, such as soundinsulation that would reduce the noise level by 25, 30, or 35 dB, should be implemented in the design andconstruction of a structure. Commercial, industrial, and agricultural uses; however, are considered to becompatible with all noise levels and do not require noise level reduction measures.5.4.3.2 Compatible Land Use Impact Assessment MethodologyCompatible land use impacts (in parcels and acres) for the No-Action Alternative and Alternatives B2 and B4include the proposed land acquisitions and noise compatibility with existing land uses. The compatible land useanalysis also considers changes in noise levels on residential land uses, zoning districts, and non-residentialnoise-sensitive sites as well as consistency with applicable local, regional, and state land use plans and policiesfor Alternatives B2 and B4. Parameters evaluated for the direct land use impact assessment include:• The size (acreage), number of parcels, and general location of land uses requiring full property acquisitions,including those properties that would be acquired for construction (mandatory) or eligible for acquisitionfor under a Future Build VLAP or for RPZ clearing (as recommended by the FAA), as well as theidentification of partial property acquisitions.• The size (acreage), number of parcels, and general location of incompatible land uses (residential land usesexposed to a noise level of DNL 65 dB and above).• The size (acreage), number of parcels, and general location of land uses exposed to significant increases innoise levels of Alternatives B2 and B4 compared to the No-Action Alternative in order to determine if landuses would become incompatible (described further below).In order to identify the land uses (in parcels and acres) that would be affected by increases in noise underAlternatives B2 and B4, the future noise contours (2015, 2020, and 2025) for the No-Action Alternative andAlternatives B2 and B4 (2015 for Alternative B4 only, and 2020 and 2025) were superimposed over the baselineland use data, and the number of parcels and acreage of land use types were calculated. The residential landuses that would be exposed to DNL 65 dB and above were determined after first excluding the land acquisitionsthat would be required for construction (mandatory), the Current Part 150 VLAP, Future Build VLAPs, andFAA-recommended RPZ clearing purposes. Refer to Section 5.1.4, Land Acquisition Assumptions, for detailedassumptions for identifying properties to be acquired.Identification of Significant ImpactsChanges in land use compatibility were examined by comparing Alternatives B2 and B4 to the No-ActionAlternative in order to determine if significant noise impacts would occur (increase of at least DNL 1.5 dB at orabove DNL 65 dB) to incompatible land uses (residential and other noise-sensitive land uses), in accordancewith FAA Order 1050.1E (refer to Table 5-6 above). Section 5.3, Noise, identifies the significant changes in noiselevels on non-residential noise-sensitive sites for Alternatives B2 and B4.5.4.3.3 Temporary Impacts from Short-Term Construction Activities Assessment MethodologyImpacts to land use due to construction activities for the Improvement Program would be temporary and wouldbe associated with construction staging areas, and road closures or relocations. Details on the locations ofstaging areas and any road closures are not known at this time.Chapter 5 - Environmental Consequences 5-49 July 2011\\mawatr\ev\09228.00\reports\FEIS_Final_July_2011\PVD_CH05_Environmental_Cons_JUL_2011.doc